Communications - Scientific Letters of the University of Zilina 2011, 13(11):97-103 | DOI: 10.26552/com.C.2011.2A.97-103

MRAS Based Sensorless and Sensor Vector Control and Smooth Transient Between Them

Jakub Vonkomer1, Milan Zalman1
1 Institute of Control and Industrial Informatics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Slovakia

Dynamic control, like vector control is an essential feature of every modern AC drive. In some cases it might be very important to provide continuous operation in case of encoder failure. It further means that the transient between sensor vector control and sensorless vector control has to be smooth. To obtain that a modified vector and sensorless vector control algorithms were designed. To allow smooth transitions, both sensor and sensorless control share common flux model. In this paper a novel robust MRAS-based speed estimator based on error between current estimators output and measured current and modifications of direct sensor vector control are presented. Theoretical analysis of estimators and design of adaptation loop is described. Finally, simulation and experimental results are shown.

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Published: July 31, 2011  Show citation

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Vonkomer, J., & Zalman, M. (2011). MRAS Based Sensorless and Sensor Vector Control and Smooth Transient Between Them. Communications - Scientific Letters of the University of Zilina, 13(2A), 97-103. doi: 10.26552/com.C.2011.2A.97-103
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    References

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